/Engine/Plugins/VirtualProduction/TimedDataMonitor/Source/TimedDataMonitor/Public/TimedDataMonitorSubsystem.h
If the channel does support it, get the current maximum sample count of channel.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Timed Data Monitor|Channel") int32 GetChannelDataBufferSize ( const [FTimedDataMonitorChannelIdentifier](API\Plugins\TimedDataMonitor\FTimedDataMonitorChannelIdentifi-) & Identifier )